Spare tire bumper lock



FIG. 1 is a perspective view of a spare tire bumper lock showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a side elevational view thereof, the elevational view of the opposing side being a mirror image thereof;

FIG. 5 is a top plan view thereof, the bottom plan view being identical thereto; and,

FIG. 6 is a reduced perspective view showing the spare tire bumper lock in use; the broken lines depict environmental structure for illustrative purposes only and form no part of the claimed design. 

We claim the ornamental design for a spare tire bumper lock, as shown and described. 